I am by no means a two-stroke enthusiast but these simple, lightweight bikes boasted 650ish performance levels. Everybody talks about the CB750s and Z1s sweeping aside the British motorcycle industry but that earlier generation of super two-strokes loosened the ground first.

They are pretty collectable now - and way harder to find parts for than a Bullet!

Great engine design that allows for individual port timing/tuning that can't be gotten with piston port 2 strokes...Parts?-definitely a challenge nowadays, but was never easy. Performance parts practically nonexistent even back in the day.....A chum built a vintage class 1/8 mile drag bike a couple of years back,using the A7 engine to be different(instead of the popular & successful RD350)